Rifle Factory Ishapore: Pictures from RFI Calendar of Year 2011

Discussion in 'Military Multimedia' started by pmaitra, Jan 9, 2011.

  1. pmaitra

    pmaitra Moderator Moderator

    Joined:
    Mar 10, 2009
    Messages:
    31,640
    Likes Received:
    17,124
    Location:
    EST, USA
    Rifle Factory Ishapore: Pictures from RFI Calendar of Year 2011

    The following pictures have been scanned from the RFI (Rifle Factory Ishapore) Calendar of the year 2011, which was kindly gifted to me by my 'friend', who is an employee at the RFI. [Part 01 of 02]

    pistol9auto1a.jpg revolver22.jpg rs315.jpg sr22.jpg sr3006.jpg


    N.B.: These pictures provide an in-exhaustive list of RFI products.
     
    Last edited: Jul 6, 2015
    Abhijat and Dinesh_Kumar like this.
  2.  
  3. pmaitra

    pmaitra Moderator Moderator

    Joined:
    Mar 10, 2009
    Messages:
    31,640
    Likes Received:
    17,124
    Location:
    EST, USA
    Rifle Factory Ishapore: Pictures from RFI Calendar of Year 2011

    The following pictures have been scanned from the RFI (Rifle Factory Ishapore) Calendar of the year 2011, which was kindly gifted to me by my 'friend', who is an employee at the RFI. [Part 02 of 02]

    r5561b1fixedbutt.jpg r556drillpractice.jpg r5561nsasfoldablebutt.jpg r556excalibur.jpg r556kalantak07fixedbutt.jpg r556kalantak07foldableb.jpg r762sniper.jpg

    N.B.: These pictures provide an in-exhaustive list of RFI products.
     
    Last edited: Jul 6, 2015
    Abhijat likes this.
  4. sayareakd

    sayareakd Moderator Moderator

    Joined:
    Feb 17, 2009
    Messages:
    15,623
    Likes Received:
    11,702
    great pic, specially INSAS.
     
  5. pmaitra

    pmaitra Moderator Moderator

    Joined:
    Mar 10, 2009
    Messages:
    31,640
    Likes Received:
    17,124
    Location:
    EST, USA
    Thanks sayareakd. I have asked this 'friend', who works at RFI, about the purpose of that short barrel under the main barrel of the Kalantak'07. He said that he believed that it was a flash suppressor to take in a bulk of the expanding gas after the bullet has passed, but then he wasn't sure. He said he will to ask his 'sir', i.e. one of his teachers at RFI and get back with more accurate information.

    There is also a typo in the calendar from which I scanned the images (Post #1, Picture #3).
     
  6. sayareakd

    sayareakd Moderator Moderator

    Joined:
    Feb 17, 2009
    Messages:
    15,623
    Likes Received:
    11,702
    I saw this rifle with commando (probably para military) he was doing security duty dress in all black. Good to see it is now given to our forces.
     
  7. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

    Joined:
    May 26, 2010
    Messages:
    27,582
    Likes Received:
    28,371
    Location:
    BHARAT, INDIA, HINDUSTHAN
    [​IMG]

    Never saw this one before..
    Thnx for sharing..
     
  8. sayareakd

    sayareakd Moderator Moderator

    Joined:
    Feb 17, 2009
    Messages:
    15,623
    Likes Received:
    11,702
    i have seen it here

    [​IMG]
     
  9. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

    Joined:
    May 26, 2010
    Messages:
    27,582
    Likes Received:
    28,371
    Location:
    BHARAT, INDIA, HINDUSTHAN

    Its looks to me more like attached weight for balance..
    I guess the rifle must have auto selection and tend to go up when fire..

    I never saw it on field and heard that it was rejected, If not and successful, it will help in CT atmosphere..
     
  10. Kunal Biswas

    Kunal Biswas Member of the Year 2011 Moderator

    Joined:
    May 26, 2010
    Messages:
    27,582
    Likes Received:
    28,371
    Location:
    BHARAT, INDIA, HINDUSTHAN
    That`s PSG-1

    [​IMG]
     
  11. sayareakd

    sayareakd Moderator Moderator

    Joined:
    Feb 17, 2009
    Messages:
    15,623
    Likes Received:
    11,702
    yeah that must be the case
     
  12. pmaitra

    pmaitra Moderator Moderator

    Joined:
    Mar 10, 2009
    Messages:
    31,640
    Likes Received:
    17,124
    Location:
    EST, USA
    PDC: Pre-Discharge Chamber

    PDC: Pre-Discharge Chamber

    There has been enough speculation about the short cylinder under the barrel of the Kalantak'07, highlighted in red boxes in the two images below:

    [​IMG]

    [​IMG]

    Name: It is called the PDC or Pre-Discharge Chamber.

    Operation: When the bullet passes the gas-outlet on top, some of the gas goes into the gas-pipe on the top of the barrel and pushes the piston back. Now, the bullet travels further forward and part of the remaining expanding gas gets into the PDC under the barrel and expands (and cools down due to Joule-Thompson effect). As the bullet exits the barrel, there is a sudden reduction in pressure at the barrel end and the the gas inside the PDC is sucked out.

    Purpose: Reduction of the temperature, and consequently, the flash of the exhaust gas following discharge of the bullet from the barrel; the flash being otherwise extremely noticeable in short barreled firearms.

    Patent: Yes. Owned by OFB.

    Source: My 'friend,' a junior employee at RFI today asked his 'sir' and actually met one of the scientists who perfected this device.
     
    Last edited: Jul 3, 2011
    sayareakd and Sridhar like this.
  13. sayareakd

    sayareakd Moderator Moderator

    Joined:
    Feb 17, 2009
    Messages:
    15,623
    Likes Received:
    11,702
    great info, this is called thinking out of the box...............great work guys at OFB.
     

Share This Page